“It’s just a strain and he will continue to work with the training staff,” Porter said ahead of the team’s first official full workout. “It’s definitely good news whenever you just talk about it being a strain. A strain is definitely good news in this case.”

Crain should be able to continue rehabbing his right biceps by throwing from his knees while the calf injury heals. He’s still working his way back from October biceps surgery, and has not thrown off a mound yet. Crain is not expected to be ready on opening day. Before the calf injury, the belief was he’d be available some time in April.

It’s unclear if his timetable has now been pushed back into May because of the calf injury.

“I haven’t talked to them about time frame,” Porter said of the training staff.